ASTROSAT CZTI

Data Quality Report

Orbit 10915

Creation date: 2024-06-27T16:05:35.510930
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_055T02_9000001576_10915cztM0_level2.evt modeM0/AS1A04_055T02_9000001576_10915cztM0_level2_quad_clean.evt
Size (bytes)414,590,40079,632,000
Size395.4 MB 75.9 MB
Events in quadrant A3,159,164511,070
Events in quadrant B3,545,999512,066
Events in quadrant C2,586,070506,220
Events in quadrant D2,873,849480,336

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130642
B0142641
C0117941
D0124801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57421222.124695%
B57422464.284222%
C5742250.435388%
D5742611.062348%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 6787 5743 30 30 0.44% 0.52%
B 6787 5743 119 119 1.75% 2.07%
C 6787 5743 0 0 0.00% 0.00%
D 6787 5743 24 24 0.35% 0.42%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 251 422121 2973.66 693 679 141.7
A 8 5 35495 245.66 693 679 141.7
A 3 1 12595 84.08 693 679 141.7
B 4 239 746724 5647.59 688 672 132.1
B 0 214 36957 274.68 688 672 132.1
B 11 51 28855 213.34 688 672 132.1
C 13 61 5010 28.19 662 664 154.2
C 3 202 1693 6.67 662 664 154.2
C 14 234 1682 6.6 662 664 154.2
D 13 104 78861 482.29 663 643 162.2
D 13 152 59964 365.77 663 643 162.2
D 1 52 39716 240.92 663 643 162.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter